CN107994354B - Space multiplexing dual-frequency receiving and transmitting antenna array - Google Patents
Space multiplexing dual-frequency receiving and transmitting antenna array Download PDFInfo
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- CN107994354B CN107994354B CN201711242763.7A CN201711242763A CN107994354B CN 107994354 B CN107994354 B CN 107994354B CN 201711242763 A CN201711242763 A CN 201711242763A CN 107994354 B CN107994354 B CN 107994354B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/067—Two dimensional planar arrays using endfire radiating aerial units transverse to the plane of the array
Abstract
The invention relates to the technical field of microwave and millimeter wave communication, and the embodiment specifically discloses a spatial multiplexing dual-frequency receiving and transmitting antenna array, which comprises a transmitting antenna linear array and a receiving antenna linear array; the transmitting antenna linear arrays and the receiving antenna linear arrays are alternately arranged in parallel at equal intervals; the polarization modes of the transmitting antenna linear array and the receiving antenna linear array are the same; the radiation directions of the transmitting antenna unit of the transmitting antenna linear array and the receiving antenna unit of the receiving antenna linear array are both end-fire directions, and the ratio range of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is [1/2, 2 ]; the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit and the wavelength value of the central frequency of the receiving antenna unit. The dual-frequency receiving and transmitting antenna array has a compact structure, realizes the coexistence of receiving and transmitting antennas in a traditional receiving or transmitting antenna array space, improves the space utilization rate, and simultaneously ensures that the antenna array does not have grating lobes.
Description
Technical Field
The invention relates to the technical field of microwave and millimeter wave communication, in particular to a spatial multiplexing dual-frequency receiving and transmitting antenna array.
Background
The rapid development of modern communication has an increasing demand for space utilization of antenna arrays, and for application platforms with strict size limitation of antenna arrays, the receiving and transmitting antenna arrays which simultaneously realize space multiplexing in limited array apertures and have different frequencies have a great application prospect.
The antenna array has the characteristics of high gain, strong directivity and the like, the directional diagram of the antenna can be deteriorated and the matching condition of the antenna can be deteriorated due to the coupling of the antennas with different frequencies in a compact environment, the spacing between the antenna array elements is generally not more than one working wavelength, and if the spacing between the antenna array elements is more than one wavelength, grating lobes are easy to appear to influence the normal operation of the array.
Disclosure of Invention
In view of this, the present application provides a spatial multiplexing dual-band transceiving antenna array, which realizes coexistence of transceiving antennas in a conventional receiving or transmitting antenna array space, improves space utilization, and ensures that no grating lobe occurs in the antenna array.
In order to solve the above technical problems, the technical solution provided by the present invention is a spatial multiplexing dual-band transmit-receive antenna array, comprising: at least one linear array of transmitting antennas and at least one linear array of receiving antennas, wherein,
the transmitting antenna linear arrays and the receiving antenna linear arrays are alternately arranged in parallel at equal intervals;
the transmitting antenna linear array and the receiving antenna linear array have the same polarization mode;
the transmitting antenna linear array is formed by linearly arranging a plurality of transmitting antenna units, the receiving antenna linear array is formed by linearly arranging a plurality of receiving antenna units, the radiation directions of the transmitting antenna units and the receiving antenna units are both end-fire directions, and the ratio range of the central frequency value of the transmitting antenna units to the central frequency value of the receiving antenna units is [1/2, 2 ];
the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit, and does not exceed the wavelength value of the central frequency of the receiving antenna unit.
Preferably, the transmitting antenna linear array is formed by linearly arranging a plurality of transmitting antenna units at equal intervals, and the receiving antenna linear array is formed by linearly arranging a plurality of receiving antenna units at equal intervals.
Preferably, the distance value between the transmitting antenna units of the transmitting antenna linear array does not exceed the wavelength value of the center frequency of the transmitting antenna units.
Preferably, the pitch value of the receiving antenna units of the receiving antenna linear array does not exceed the wavelength value of the center frequency of the receiving antenna units.
Preferably, when the ratio of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is in the range of [1/2, 1], the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the receiving antenna unit.
Preferably, when the ratio range of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is [1, 2], the distance value between the adjacent transmitting antenna linear array and the adjacent receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit.
Preferably, the transmitting antenna linear array and the receiving antenna linear array are both arranged on a dielectric substrate.
Preferably, the transmitting antenna linear array and the receiving antenna linear array are both connected with a feed network.
Preferably, the transmitting antenna unit and the receiving antenna unit are both end-fire antennas.
Compared with the prior art, the beneficial effects of the method are detailed as follows: the spatial multiplexing dual-frequency transceiving antenna array provided by the embodiment of the invention comprises at least one transmitting antenna linear array and at least one receiving antenna linear array; the transmitting antenna linear arrays and the receiving antenna linear arrays are alternately arranged in parallel at equal intervals; the polarization modes of the transmitting antenna linear array and the receiving antenna linear array are the same; the radiation directions of the transmitting antenna unit of the transmitting antenna linear array and the receiving antenna unit of the receiving antenna linear array are both end-fire directions, and the ratio range of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is [1/2, 2 ]; the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit and the wavelength value of the central frequency of the receiving antenna unit. The dual-frequency receiving and transmitting antenna array has a compact structure, realizes the coexistence of receiving and transmitting antennas in a traditional receiving or transmitting antenna array space, improves the space utilization rate, and simultaneously ensures that the antenna array does not have grating lobes.
Drawings
FIG. 1 is a schematic diagram of the general structure of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic diagram of a linear array structure of a transmitting antenna according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a linear array structure of a receiving antenna according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a linear array feed network of a transmitting antenna according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a linear array feed network of a receiving antenna according to an embodiment of the present invention;
FIG. 7 shows simulation results of reflection coefficients of a transmitting antenna linear array and a receiving antenna linear array according to an embodiment of the present invention;
FIG. 8 shows the simulation results of the gain of the transmitting antenna linear array and the receiving antenna linear array according to the embodiment of the present invention;
fig. 9 is a simulation result of a central frequency directional diagram of a transmitting antenna linear array according to an embodiment of the present invention;
fig. 10 is a simulation result of a central frequency directional pattern of a linear array of a receiving antenna according to an embodiment of the present invention;
in the drawings are labeled: 1-transmitting antenna linear array, 2-receiving antenna linear array, 3-transmitting antenna unit, 4-receiving antenna unit, 5-transmitting antenna linear array dielectric substrate, 6-receiving antenna linear array dielectric substrate, 7-transmitting antenna linear array feed network, 8-receiving antenna linear array feed network, 9-1-3 feed network and 10-1-4 feed network.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present invention provides a spatial multiplexing dual-band transmit-receive antenna array, which includes: the antenna array comprises at least one transmitting antenna linear array 1 and at least one receiving antenna linear array 2, wherein the transmitting antenna linear array 1 and the receiving antenna linear array 2 are alternately arranged in parallel at equal intervals; the polarization modes of the transmitting antenna linear array 1 and the receiving antenna linear array 2 are the same; the transmitting antenna linear array 1 is formed by linearly arranging a plurality of transmitting antenna units 3, the receiving antenna linear array 2 is formed by linearly arranging a plurality of receiving antenna units 4, the radiation directions of the transmitting antenna units 3 and the receiving antenna units 4 are both end-fire directions, the ratio range of the central frequency value of the transmitting antenna units 3 to the central frequency value of the receiving antenna units 4 is [1/2, 2], and the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna units and does not exceed the wavelength value of the central frequency of the receiving antenna units.
Here, the transmitting antenna linear array 1 is used for transmitting signals, the receiving antenna array 2 is used for receiving signals, and the positions of the transmitting antenna linear array 1 and the receiving antenna array 2 can be interchanged. The reference to the transmitting antenna array 1 and the receiving antenna array 2 is only for the convenience of explaining the structural form thereof, and is not intended to limit the function and position thereof.
The transmitting antenna linear array 1 is formed by linearly arranging a plurality of transmitting antenna units 3 at equal intervals, and the receiving antenna linear array 2 is formed by linearly arranging a plurality of receiving antenna units 4 at equal intervals.
The distance value between the transmitting antenna units 3 of the transmitting antenna linear array 1 does not exceed the wavelength value of the central frequency of the transmitting antenna units 3.
The distance value of the receiving antenna units 4 of the receiving antenna linear array 2 does not exceed the wavelength value of the central frequency of the receiving antenna units 4.
When the ratio range of the central frequency value of the transmitting antenna unit 3 to the central frequency value of the receiving antenna unit 4 is [1/2, 1], the distance value between the transmitting antenna linear array 1 and the receiving antenna linear array 2 does not exceed the wavelength value of the central frequency of the receiving antenna unit 3.
When the ratio range of the central frequency value of the transmitting antenna unit 3 to the central frequency value of the receiving antenna unit 4 is [1, 2], the distance value between the transmitting antenna linear array 1 and the receiving antenna linear array 2 does not exceed the wavelength value of the central frequency of the transmitting antenna unit 4.
The transmitting antenna linear array 1 is arranged on a dielectric substrate 5, and the receiving antenna linear array is arranged on a dielectric substrate 6.
The transmitting antenna linear array 1 is connected with a transmitting antenna linear array feed network 7, and the receiving antenna linear array 2 is connected with a receiving antenna linear array feed network 8.
As shown in fig. 2-6, an embodiment of the present invention provides a spatial multiplexing dual-frequency transceiving antenna array, which includes 5 transmitting antenna linear arrays 1 and 4 receiving antenna linear arrays 2 (a part of structures are omitted in the figures), where each transmitting antenna linear array 1 is formed by linearly arranging 3 transmitting antenna units 3 at equal intervals, and each receiving antenna linear array 2 is formed by linearly arranging 4 receiving antenna units 4 at equal intervals. The transmitting antenna linear array 1 is positioned on a transmitting antenna linear array dielectric substrate 5, and the receiving antenna linear array 2 is positioned on a receiving antenna linear array dielectric substrate 6. The transmitting antenna linear array 1 is connected with a feed network 9 of 1 minute 3, the receiving antenna linear array 2 is connected with a feed network 10 of 1 minute 4, and the transmitting antenna linear array 1 and the receiving antenna linear array 2 are alternately arranged to form a double-frequency receiving and transmitting antenna array. The transmitting antenna linear array 1 and the receiving antenna linear array 2 have the same polarization mode and cannot be polarized and isolated.
The radiation directions of the transmitting antenna unit 3 and the receiving antenna unit 4 are both end-fire directions, and the available antenna units include quasi-dipole antennas, quasi-yagi antennas, Vivaldi antennas, log-periodic antennas, and the like. In this embodiment, quasi-dipole antennas are used as antenna array antenna units, and the transmitting antenna unit 3 and the receiving antenna unit 4 are quasi-dipole end-fire antennas. In order to realize the miniaturization of the antenna array and meet the spacing requirement of the antenna array, a dielectric substrate RT6010L with higher dielectric constant is selected. The center frequency of operation of the transmitting antenna unit 3 is 20GHz, and the center frequency of operation of the receiving antenna unit 4 is 30 GHz.
The transmitting antenna units 3 are arranged at the same interval to form a transmitting antenna linear array 1, the receiving antenna units 4 are arranged at the same interval to form a receiving antenna linear array 2, the transmitting antenna linear array 1 and the receiving antenna linear array 2 are respectively positioned on different medium substrates, the medium substrates can be different materials or the same material, and are arranged according to actual requirements. The distance value between the transmitting antenna units 3 of the transmitting antenna linear array 1 and the distance value between the receiving antenna units 4 of the receiving antenna linear array 2 are set to be half wavelength of the center frequency (30GHz) of the receiving antenna units 4. The transmitting antenna linear arrays 1 and the receiving antenna linear arrays 2 are alternately arranged at equal intervals to form a dual-frequency transceiving antenna array, and the interval value is set to be a quarter wavelength of the central frequency (30GHz) of the receiving antenna unit 4. The dual-frequency transceiving antenna array is symmetrical about the central axis of the dual-frequency transceiving antenna array formed by the dual-frequency transceiving antenna array.
Fig. 7 is a simulation result of reflection coefficients of the transmitting antenna linear array and the receiving antenna linear array of the embodiment, fig. 8 is a simulation result of gains of the transmitting antenna linear array and the receiving antenna linear array of the embodiment, fig. 9 is a simulation result of a central frequency directional diagram of the transmitting antenna linear array of the embodiment, and fig. 10 is a simulation result of a central frequency directional diagram of the receiving antenna linear array of the embodiment. It follows that the present invention can be well implemented according to the above-described embodiments. The invention can improve the space utilization rate of the dual-frequency transceiving antenna array, maintain the respective good electrical characteristics of the antenna array, simultaneously adopt the end-fire antenna to have good expansion function, can increase the antenna linear array along the direction of the array alternate arrangement, and can simply replace the linear array (replace the linear array with different units). It should be noted that the present invention is not only suitable for 20GHz and 30GHz dual-frequency spatial multiplexing transmit-receive antenna arrays, but also suitable for other frequencies. The adopted antenna is not limited to a PCB antenna, and is also suitable for a chip-mounted antenna, a dielectric loading aperture antenna and the like. In addition, the linear arrays can be connected through a power divider. The dual-frequency transceiving antenna array is connected with the back-end equipment through wire bonding or other assembly modes. The dual-frequency transceiving antenna array can be fixed by adopting a bracket and screws.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (5)
1. A spatially multiplexed dual-band transmit receive antenna array, comprising: at least one linear array of transmitting antennas and at least one linear array of receiving antennas, wherein,
the transmitting antenna linear arrays and the receiving antenna linear arrays are alternately arranged in parallel at equal intervals;
the transmitting antenna linear array and the receiving antenna linear array have the same polarization mode;
the transmitting antenna linear array is formed by linearly arranging a plurality of transmitting antenna units, the receiving antenna linear array is formed by linearly arranging a plurality of receiving antenna units, the radiation directions of the transmitting antenna units and the receiving antenna units are both end-fire directions, and the ratio range of the central frequency value of the transmitting antenna units to the central frequency value of the receiving antenna units is [1/2, 1] or (1, 2 ];
the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit, and does not exceed the wavelength value of the central frequency of the receiving antenna unit;
the distance value of the transmitting antenna units of the transmitting antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna units;
the distance value of the receiving antenna units of the receiving antenna linear array does not exceed the wavelength value of the central frequency of the receiving antenna units;
when the ratio range of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is [1/2, 1), the distance value between the transmitting antenna linear array and the receiving antenna linear array does not exceed the wavelength value of the central frequency of the receiving antenna unit;
when the ratio range of the central frequency value of the transmitting antenna unit to the central frequency value of the receiving antenna unit is (1, 2), the distance value between the adjacent transmitting antenna linear array and the adjacent receiving antenna linear array does not exceed the wavelength value of the central frequency of the transmitting antenna unit.
2. The spatial multiplexing dual-band transmit-receive antenna array as claimed in claim 1, wherein the transmit antenna linear array is composed of a plurality of transmit antenna units linearly arranged at equal intervals, and the receive antenna linear array is composed of a plurality of receive antenna units linearly arranged at equal intervals.
3. The spatial multiplexing dual-band transmit-receive antenna array of claim 1, wherein the transmit antenna linear arrays and the receive antenna linear arrays are both disposed on a dielectric substrate.
4. The spatial multiplexing dual-band transmit-receive antenna array of claim 1, wherein the transmit antenna linear arrays and the receive antenna linear arrays are both connected to a feed network.
5. The array of spatial multiplexing dual-band transmit receive antenna of claim 1, wherein the transmit antenna elements and the receive antenna elements are all endfire antennas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711242763.7A CN107994354B (en) | 2017-11-30 | 2017-11-30 | Space multiplexing dual-frequency receiving and transmitting antenna array |
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| CN107994354B true CN107994354B (en) | 2020-10-09 |
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| MXPA03009485A (en) * | 2001-04-16 | 2004-05-05 | Fractus Sa | Dual-band dual-polarized antenna array. |
| WO2009134788A1 (en) * | 2008-04-28 | 2009-11-05 | Wispry, Inc. | Tunable duplexing antenna and methods |
| DE102012003877A1 (en) * | 2011-10-15 | 2013-04-18 | S.M.S Smart Microwave Sensors Gmbh | Radar system for a road vehicle with improved calibration capabilities |
| DE102014219113A1 (en) * | 2014-09-23 | 2016-03-24 | Robert Bosch Gmbh | A MIMO radar apparatus for decoupling an elevation angle and an azimuth angle of an object and a method for operating a MIMO radar apparatus |
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Effective date of registration: 20220215 Address after: 1 / F, 144 Tianshun Road, hi tech Zone, Chengdu, Sichuan 610000 Patentee after: CHENGDU ZHONGYU MICROCHIP TECHNOLOGY CO.,LTD. Address before: Building 23, Science Park, University of Electronic Science and technology, No.1 Gongxing Avenue, Gongxing Town, Shuangliu District, Chengdu, Sichuan 610213 Patentee before: CHENGDU JULI ZHONGYU TECHNOLOGY CO.,LTD. |
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